Question

5^x+1-5^x= 500 помогите
быстрее

Answer 1

x > 0
5^x*5 - 5^x = 500 
5^x*(5 - 1) = 500
5^x*4 = 500
5^x = 500/4
5^x = 125
5^x = 5^3
x = 3